package com.rabbit.config;

import java.util.HashMap;
import java.util.Map;
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.CustomExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class DelayedQueueConfig {
  public static final String DELAYED_QUEUE_NAME = "delayed.queue";
  public static final String DELAYED_EXCHANGE_NAME = "delayed.exchange";
  public static final String DELAYED_ROUTING_KEY = "delayed.routingkey";
  @Bean
  public Queue delayedQueue() {
    return new Queue(DELAYED_QUEUE_NAME);
  }
  //自定义交换机 我们在这里定义的是一个延迟交换机
  @Bean
  public CustomExchange delayedExchange()
  { Map<String, Object> args = new HashMap<>();
//自定义交换机的类型
    args.put("x-delayed-type", "direct");
    return new CustomExchange(DELAYED_EXCHANGE_NAME, "x-delayed-message", true, false,
        args);
  }
  @Bean
  public Binding bindingDelayedQueue(@Qualifier("delayedQueue") Queue queue,
      @Qualifier("delayedExchange") CustomExchange
          delayedExchange) {
    return
        BindingBuilder.bind(queue).to(delayedExchange).with(DELAYED_ROUTING_KEY).noargs();
  }
}
